Precast concrete foundation holding jig



Feb. 15, 1954 J, WILSON 2,669,013

PRECAST CONCRETE FOUNDATION HOLDING JIG Filed Aug. 22, 1949 ,8 r z INVENTOR. 7

o m I 1.701 222 0212 [45/5027 I BY Patented Feb. 16, 1954 PRECAST CONCRETE FOUNDATION HOLDING JIG John Hart Wilson, Wichita Falls, Tex.

Application August 22, 1949, Serial No. 111,611

4 Claims.

the other consisted primarily of blocks, timbers,

or masonry piers that were more or less of the temporary or semi-permanent construction.

The monolith construction offered certain advantages of a permanent nature; however, with the advent of pre-fabricated concrete houses much trouble was experienced in obtaining the desired placing of bolts, holes, reinforcing and the like, which would align with pre-cast slabs. In the molding of pre-cast concrete foundation slabs, the holes and bolts were located by placement jigs to register with complementary holes, bolts, and reinforcing members in the pre-oast concrete building slab; however, unless the precast concrete foundation members were accurately placed and aligned the value of the I placement of the holes was greatly diminished;

however, with the present alignment and holding jig a pre-cast concrete foundation member may be lowered into contact relation with spaced concrete footings poured in the earth until the top of the p're-cast concrete slab is at the desired height, level and plumb. Screws are provided for holding the pre-cast concrete foundation member when it is in the desired position. The pre-cast concrete foundation slab is held in this position until the footings thereunder are securely set, which then enables the removal of the jig or tool therefrom. After the removal of the jig or tool, the pre-cast concrete foundation member is substantially as secure as if it had been poured of monolithic construction.

An object of this invention is to provide a concrete foundation holding jig that will hold a pre-cast concrete foundation member in aligned, plumbed, leveled and suspended relation until a footing thereunder may set so as to hold the pre-cast concrete foundation member in permanent relation thereto.

Another object of the invention is to provide a tool for setting pre-cast concrete foundation members which is light in weight, sturdy in com struction, easy to apply and remove from the pre-cast concrete foundation member.

Another object of the invention is to provide a hydraulically operated leveling tool for leveling pre-cast concrete foundation members.

With these objects in view and others that will manifest themselves as the description proceeds, reference is to be had to the drawings, in which:

Fig. 1 is a perspective view of the invention showing a side, front, and top;

' Fig. 2 is an elevational view of the invention showing a pre-cast concrete building slab positioned therein; and

Fig. 3 is an exploded perspective view thereof, with parts broken away and shown in section, of a jack abutting member.

With more specific reference to the drawings, the numeral 1 represents base members upon which an inverted u-member 2, preferably constructed of structural metal which forms supporting legs for a top member 3. The top member 3 may be braced with additional braces 4 to insure rigidity.

Handles 5 are positioned on each side of the device and secured to upright members 2, which enables the placing of the device about the precast concrete foundation building member, prior to the placement of the foundation member.

A box member 6 is formed on the'upper side of top member 3 and preferably has roller elements 1 positioned therein, as indicated in Figs. land 3. A plate 8 is positioned on the roller elements 1 for rolling relation therewith and forms a seat or base for a jack member 26, as

will be more fully described hereinafter.

A pair of bars 9 are arranged to straddle box member 5 and top member 3, and have coupling members I0 and I l at the top and bottom,'respec tively. The top member N] forms an abutting head to receive the jack [6 thereunder, as will be seen in Figs. 1 and 2. The bottom member H preferably has an aperture i2 therein, which is adapted to receive a hook l3 for engagement with eye members i4, either formed on or attached to the precast concrete foundation elements it. The bars 9 are of sufficient length to enable the foundation member [5 to be raised and lowered within prescribed limits and to be moved from side to side by a rolling action of plate 8, jack I6, and rod assembly members 9-41, so as to procure the correct aligned relation of the conerete foundation member IS with adjacent concrete foundation members of similar construc tion. When aligned transversely within the inverted U-shaped member 2, the jack i6 is used to raise or lower an end of the foundation member l5 until the member is substantially level. It is preferable to have two or more of these when in plumbed and leveled relation the screwmembers I! are screwed inward to hold the foundation member l5 securely.

It will be appreciated that foundations-can be set expeditiously and accurately-with this tool with a minimum of labor.

While the invention has been illustrated and described somewhat in detail, it is to be understood that minor changes in the construction thereof may be made within the scope of the appended claims without departing from the spirit of the invention.

Having thus described my invention, I claim: 1. In a tool for supporting a precast concrete foundation member, a pair of base members, an

upright member secured to each of said base members, a transverse member secured to and interconnecting the upper .ends of said upright members, a pair of rollers positioned on the upper side of said transverse member and forming a seat for ajack, ayoke straddling said transverse member and projecting .thereabove and therebelow, a jack seated on said rollers and posi- .tioned within .and supporting said yoke, said downwardly depending portion of said yoke beher and supporting said yoke, said depending porz,-

tion of said yoke member being engageable with said precastconcrete foundationmember for supporting same, and pairs of horizontally aligned screw actuated members on each of said upright members for securing said precast foundation t members in an adjusted position both vertically and horizontally.

3. In a tool for supporting a precast concrete foundation member, a pair of spaced base memhere, an upright member secured to each of said base members, a transverse member connecting the upper ends of said upright members, a yoke straddling said transverse member and projecting thereabove and therebelow, rollers mounted for limited longitudinal movement on said transverse member, a jack seated on said rollers and positioned within and supporting said yoke member, said yoke member and said jack being movable longitudinally of said transverse member,

said downwardly depending portion of said yoke member being engageable with said precast concrete foundation'member for supporting same and inwardly extending, pairs of screw actuated means on said upright members for .securing said precast concrete foundation member in an adjusted position both vertically and horizontally, and means for locking said screw actuated means in said adjusted position.

4. In a tool for supporting a concrete foundation member, a pair of base members, an upright member secured to each of said base members, a transverse member connecting the upper ends of upright members, a yoke straddling said transverse member and projecting thereabove for receiving a jack between the upper surface of said transverse member and. the upper closed end of said yoke member, said yoke member having a portion thereof depending downwardly below transverse member, which downwardly depending yoke portion has a hook on the lower end thereof for engaging and sup-- porting said precast concrete foundation member, and pairs of pointed, horizontally aligned, screw actuated members on each of said upright members for securing said precast concrete foundation member in an adjusted position both horizontally and vertically.

JOHN HART WILSON.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 947,160 Newerf .Jan. 18, 1910 1,587,682 Siegfried 'et al. -1 June '8, 1926 1,876,290 Hanna Sept. 6, 1932 2,000,572 Smith May 7,1935 2,219,191 Merrill etal Oct. 22, 1940 2,370,496 Seip Feb. 27, 1945 

